Synthesis, thermal and optical properties of nanosized polyamides containing N-phenyl- and N-naphthyl-s-triazine rings: Structure-properties correlation

Mansour, E. M. E.; Iskander, Abanob A. F.; Hassan, Hammed H. A. M.

doi:10.1080/10601325.2016.1261623

Cited by 6 publications

(2 citation statements)

References 32 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Greater the char residue, higher would be the LOI values and more would be the ame retarding behavior. It is known that the polymers having LOI values greater than 21 are ame retarding materials whereas the polymers having LOI values higher than 33 are known to be self-extinguishing polymers [27]. LOI values can be found by applying the Van Krevelen-Hoftyzer equation (eq.…”

Section: Thermal Analysismentioning

confidence: 99%

Facile Synthesis of Ferrocene-Based Polyamides and Their Organic Analogues Terpolyamides: Influence of Aliphatic and Aromatic Sequences on Physico-Chemical Characteristics

Khan

Akhter

Gul

et al. 2022

J Inorg Organomet Polym

View full text Add to dashboard Cite

Efforts have been devoted to synthesize and characterize processable polymers with desired properties.Herein, four different series of aromatic and aliphatic terpolyamides were prepared via solution phase polycondensation of 4,4'-oxydianiline and hexamethylenediamine (HMDA) with various diacids chlorides (isophthalyol dichloride, terepthalyol dichloride, 1, 1'-ferrocene dicarboxylic acid chloride and transazobenzene-4, 4'-dicarbonyl chloride). The structural, morphological and physico-chemical nature of as prepared polymers was explored by Fourier-transform infrared spectroscopy (FT-IR), scanning electron microscopy (SEM), thermal analysis (TGA and DSC), and wide-angle x-ray diffraction (WAXRD). Moreover, an aliphatic diamine was incorporated in varying concentration as a exible methylene spacer and the effect of its concentration on the properties of polyamides was also studied. Changes in various physicochemical properties such as solubility, inherent viscosity, surface morphology and ame retarding behaviour were investigated. Marked difference in morphology and solubility was observed with the change in the ratio of segments in the chain. Inherent viscosities of polymers ranged from 1.8052-1.6274 dl/g indicating reasonably moderate molecular weights. Interestingly, ferrocene based aromatic polymers were more thermally stable (T g 260 o C, T i 310 o C, T h 525 o C, T f 720 o C, for PF 0 ), and also found to exhibit best ame retarding behavior (limiting oxygen index (LOI) value for PF 0 is LOI 33.15 %).

show abstract

Section: Thermal Analysismentioning

confidence: 99%

Facile Synthesis of Ferrocene-Based Polyamides and Their Organic Analogues Terpolyamides: Influence of Aliphatic and Aromatic Sequences on Physico-Chemical Characteristics

Khan

Akhter

Gul

et al. 2022

J Inorg Organomet Polym

View full text Add to dashboard Cite

show abstract

“…Synthesized a new set of high-performance polyamides based on s-triazine ring as flexibilizing linkages into the backbone of wholly aromatic polyamides, which results in soluble polyamides with higher thermal stability along with good processability [12][13][14][15][16][17][18][19][20].…”

Section: Introductionmentioning

confidence: 99%

Synthesis and characterization of semi-aromatic polyamides containing heterocyclic 1,3,5 s-triazine and methylene spacer group for thermally stable and colloidal property

Tamboli¹,

Kalshetti²,

Ghodke³

et al. 2020

Designed Monomers and Polymers

View full text Add to dashboard Cite

A new aromatic diacid (II) was synthesized and Characterized by Spectroscopic techniques namely, FT-IR, 1 H and 13 C NMR, etc. A series of aromatic aliphatic polyamides containing phenoxy s-triazine ring with methylene spacer group was synthesized from diacid (II) and various aromatic diamines by using Yamazaki Phosphorylation method. These polyamides were obtained in good yields and characterized by solubility in common organic solvent, inherent viscosity, FT-IR, X-ray diffraction analysis. All of these polyamides were found to be amorphous in morphology as indicated by XRD to posses outstanding solubilities, and to be easily dissolved in amide-type polar aprotic polar solvents. Polyamides with moderate inherent viscosity in the range 0.21 to 0.41 dL/g in N,N,dimethyl formamide solvent (DMF) at 30 ± 0.1° C. The Thermal properties of the polyamides were evaluated by Thermogravimetric analysis and Differential scanning calorimetery. These polymer shows good thermal stability with glass transition temperature (T g) of 143-223°C and their (T max) weight loss temperature were around 426-455°C, confirming their good thermal stability. The char yields of these polymers were given their limiting oxygen index LOI 32.3 to 37.5 5% values of polyamides; indicate these polymers also show good flame resistance. The NPs were negatively charged with a zeta potential of −24.2 to −37.9 mV indicating a good colloidal stability against aggregation.

show abstract

Intrinsically flame retardant polyamides: Research progress in the last 15 years

Drigo

Gaan

2023

Advanced Industrial and Engineering Polymer Research

View full text Add to dashboard Cite

Synthesis, thermal and optical properties of nanosized polyamides containing N-phenyl- and N-naphthyl-s-triazine rings: Structure-properties correlation

Cited by 6 publications

References 32 publications

Facile Synthesis of Ferrocene-Based Polyamides and Their Organic Analogues Terpolyamides: Influence of Aliphatic and Aromatic Sequences on Physico-Chemical Characteristics

Facile Synthesis of Ferrocene-Based Polyamides and Their Organic Analogues Terpolyamides: Influence of Aliphatic and Aromatic Sequences on Physico-Chemical Characteristics

Synthesis and characterization of semi-aromatic polyamides containing heterocyclic 1,3,5 s-triazine and methylene spacer group for thermally stable and colloidal property

Intrinsically flame retardant polyamides: Research progress in the last 15 years

Contact Info

Product

Resources

About